window.MainPageCustomization = {};  MainPageCustomization.set = function(p) {     if (MainPageCustomization.pageName === undefined) {         MainPageCustomization.pageName = p;     } else {         MainPageCustomization.pageName = null;         alert('You chose more than one main page style.');         window.location.href = mw.config.get('wgScript') + '?title=Special:Preferences#prefsection-8';     } };  $(function() {     if (mw.config.get('wgIsMainPage')) {         if ((mw.config.get('wgAction') === 'view' || mw.config.get('wgAction') === 'purge') && MainPageCustomization.pageName) {             // #article is for some old skins             jQuery('.mw-content-ltr').text('Loading customized main page...').show().load(mw.config.get('wgScript'), {                 action: 'render',                 title: MainPageCustomization.pageName             }, function(response, status, xhr) {                 if (status == 'error') {                     jQuery('.mw-content-ltr').text('Sorry, but there was an error when '                         + 'loading customized main page: ' + xhr.status + ' ' + xhr.statusText                     );                 }             });         } else {             jQuery('.mw-content-ltr').show();         }     } });